///
// * jdbm LICENSE v1.00
// *
// * Redistribution and use of this software and associated documentation
// * ("Software"), with or without modification, are permitted provided
// * that the following conditions are met:
// *
// * 1. Redistributions of source code must retain copyright
// *    statements and notices.  Redistributions must also contain a
// *    copy of this document.
// *
// * 2. Redistributions in binary form must reproduce the
// *    above copyright notice, this list of conditions and the
// *    following disclaimer in the documentation and/or other
// *    materials provided with the distribution.
// *
// * 3. The name "jdbm" must not be used to endorse or promote
// *    products derived from this Software without prior written
// *    permission of Cees de Groot.  For written permission,
// *    please contact cg@cdegroot.com.
// *
// * 4. Products derived from this Software may not be called "jdbm"
// *    nor may "jdbm" appear in their names without prior written
// *    permission of Cees de Groot.
// *
// * 5. Due credit should be given to the jdbm Project
// *    (http://jdbm.sourceforge.net/).
// *
// * THIS SOFTWARE IS PROVIDED BY THE ndbm PROJECT AND CONTRIBUTORS
// * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
// * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
// * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
// * CEES DE GROOT OR ANY CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
// * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
// * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
// * OF THE POSSIBILITY OF SUCH DAMAGE.
// *
// * Copyright 2001 (C) Alex Boisvert. All Rights Reserved.
// * Contributions are Copyright (C) 2001 by their associated contributors.
// *
// 

//*************************************************************************
//**  Included in JDMB 1.0 port to SharpDBM;  11/2013 Cyrus Neah cneah@codingreal.com
//**  SharpDBM is an independent reimplementation of the JDBM 1.0 software library in C#  
//*************************************************************************


using System;


using RecordManager = SharpDBM.RecordManager;
using RecordManagerFactory = SharpDBM.RecordManagerFactory;
using FastIterator = SharpDBM.helper.FastIterator;
using HTree = SharpDBM.htree.HTree;
using System.IO;
using System.Threading;


///
// * Sample ndbm application to demonstrate the use of basic ndbm operations.
// *
// * @author <a href="mailto:boisvert@intalio.com">Alex Boisvert</a>
// * @version $Id: FruitBasket.java,v 1.3 2003/08/06 20:10:15 boisvert Exp $
// 
public class FruitBasket
{
	internal RecordManager recman;
	internal HTree hashtable;
	internal FastIterator iter;
	internal string fruit;
	internal string color;



//
	public FruitBasket()
	{
		// create or open fruits record manager
		
		recman = RecordManagerFactory.createRecordManager("fruits");

		// create or load fruit basket (hashtable of fruits)
		long recid = recman.getNamedObject("basket");
		if (recid != 0)
		{
			Console.WriteLine("Reloading existing fruit basket...");
			hashtable = HTree.load(recman, recid);
			showBasket();
		}
		else
		{
			Console.WriteLine("Creating new fruit basket...");
			hashtable = HTree.createInstance(recman);
			recman.setNamedObject("basket", hashtable.getRecid());
		}
	}



//
	public virtual void runDemo()
	{
		// insert keys and values
		Console.WriteLine();
		Console.WriteLine("Adding fruits to the basket...");
		hashtable.put("bananas", "yellow");
		hashtable.put("strawberries", "red");
		hashtable.put("kiwis", "green");
        
        // enter a class in the database
        hashtable.put("fruitclass",new Fruit("oranges", "yellow"));

		showBasket();
        
		// display color of a specific fruit
		Console.WriteLine();
		Console.WriteLine("Get the color of bananas...");
		string bananasColor = (string) hashtable.get("bananas");
		Console.WriteLine("bananas are " + bananasColor);

        hashtable.put("bananas", "green");
        Console.WriteLine();
        Console.WriteLine("Get the new color of bananas...");
        bananasColor = (string)hashtable.get("bananas");
        Console.WriteLine("bananas are now " + bananasColor);




		recman.commit();

		try
		{
			// Thread.Sleep( 10 * 1000 );
		}
		catch (Exception except)
		{
			// ignore
		}

		// remove a specific fruit from hashtable
		//Console.WriteLine();
		//Console.Write("Removing bananas from the basket...");
		//hashtable.remove("bananas");
		//recman.commit();
		//Console.WriteLine(" done.");

		// iterate over remaining objects
		Console.WriteLine();
		Console.WriteLine("Remaining fruit colors:");
		iter = hashtable.keys();
		fruit = (string) iter.next();
        Fruit fruitclass;
		while (fruit != null)
		{
			
            if (fruit == "fruitclass")
            {
                Console.WriteLine(" This is a fruit class");
                fruitclass = (Fruit)hashtable.get(fruit);
                Console.WriteLine(fruitclass.Name + " are " + fruitclass.Color);
            }
            else {
                color = (string)hashtable.get(fruit);
                Console.WriteLine(fruit + " are " + color);
            }

			
			fruit = (string) iter.next();
		}

		// cleanup
		recman.close();
        //recman = null;
	}



//
	public virtual void showBasket()
	{
		// Display content of fruit basket
		Console.WriteLine();
		Console.Write("Fruit basket contains: ");
		iter = hashtable.keys();
		fruit = (string) iter.next();
		while (fruit != null)
		{
			Console.Write(" " + fruit);
			fruit = (string) iter.next();
		}
		Console.WriteLine();
	}

    [Serializable]
    public class Fruit{

        string _name, _color;

        public string Color
        {
            get { return _color; }
            set { _color = value; }
        }

        public string Name
        {
            get { return _name; }
            set { _name = value; }
        }
        
        public Fruit(string name,string color){
            _name = name;
            _color = color;
        }


    }
	

}
